Kierzno [ˈkʲɛʐnɔ] is a village in the administrative district of Gmina Kępno, within Kępno County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 9 kilometres (6 mi) north-east of Kępno and 143 km (89 mi) south-east of the regional capital Poznań.

The village has an approximate population of 550.